Tire Pressure

The tire inflation pressure is directly related to
safety therefore must be checked regularly as
correct maintenance can prolong the lifespan of
the tires. Learn more about the importance of
tire inflation pressure and how to check the
pressure of your tires below.

Importance of Tire Pressure

Optimum air pressure should be maintained to ensure safety, driving performance, tire life and fuel cost.

Tires have been known to lose up to one pound per square inch (psi) every month. It is important to check all tires, even the spare, at least once a month or before a long trip.

Recommended Interval

Tire pressure should be inspected monthly.

< Tire pressure and tire life >

Low air pressure: It causes the contact patch width to increase, which results in excessive force on the either edge of the tread. Outer abrasion can damage each part of the tire. It also contributes to an increased slope of the sidewall compared to that of optimum air pressure, which can be dangerous.

High air pressure: Due to the inflated shape of the tire, like a balloon, the force is focused at the center. The resulting uneven force across the contact patch becomes the cause of abnormal abrasion.

Checking for Optimum Tire Pressure

< Driver’s side door >

< Inside of fuel tank cap >

Hankook recommends that you check your tire pressure once each month.

The optimum air pressure level for your tire can be found on the inner side of the car door, inside the fuel cap or in the car manual (the location of the sticker can vary according to country).

The number on the tires sidewall represents maximum air pressure for that specific tire, therefore do not use this figure as a basis for comparison.

How to Check Tire Pressure

1) Purchase a certified air pressure gauge or take your vehicle to a nearby service center or fuel station for a check-up.

2) Tires must be checked in a “cold” state (at least three hours after driving).

3) Insert the gauge into the valve.

4) Compare the measured air pressure level with the level listed on the car door.

- If the measured figure is higher release air until the figure matches what is listed on the car door.

- If the measured figure is lower insert more air until the figure matches what is listed on the car door.